Talk mode will be cancelled by any of the following interface control codes being received:
12H
Listen Address for any instrument.
14H
Talk Address followed by an address not belonging to this instrument.
03H
Universal Unaddress control code.
04H
Lock Non-Addressable mode control code.
18H
Universal Device Clear.
Talk mode will also be cancelled when the instrument has completed sending a response
message or has nothing to say.
The interface code 0AH (LF) is the universal command and response terminator; it must be the
last code sent in all commands and will be the last code sent in all responses.
The interface code 0DH (CR) may be used as required to aid the formatting of commands; it will
be ignored by all instruments. Most instruments will terminate responses with CR followed by LF.
The interface code 13H (XOFF) may be sent at any time by a listener (instrument or controller) to
suspend the output of a talker. The listener must send 11H (XON) before the talker will resume
sending. This is the only form of handshake control supported by ARC.
Full List of Addressable RS232 (ARC) Interface Control Codes
02H
Set Addressable Mode.
03H
Universal Unaddress control code.
04H
Lock Non-Addressable mode control code.
06H
Acknowledge that listen address received.
0AH
Line Feed (LF); used as the universal command and response terminator.
0DH
Carriage Return (CR); formatting code, otherwise ignored.
11H
Restart transmission (XON).
12H
Listen Address - must be followed by an address belonging to the required instrument.
13H
Stop transmission (XOFF).
14H
Talk Address - must be followed by an address belonging to the required instrument.
18H
Universal Device Clear.
GPIB Interface
When the GPIB interface is fitted the 24-way GPIB connector is located on the instrument rear
panel. The pin connections are as specified in IEEE Std. 488.1-1987 and the instrument
complies with IEEE Std. 488.1-1987 and IEEE Std. 488.2-1987.
GPIB Subsets
This instrument contains the following IEEE 488.1 subsets:
Source Handshake
SH1
Acceptor Handshake
AH1
Talker
T6
Listener
L4
Service Request
SR1
Remote Local
RL1
Parallel Poll
PP1
Device Clear
DC1
Device Trigger
DT0
Controller
C0
Electrical Interface E2
15
Telemeter Electronic GmbH | Joseph-Gaensler-Str. 10 | Phone +49 906 70693-0 | Fax +49 906 70693-50 | www.telemeter.info
16